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<div class="title">service.c</div>  </div>
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<a href="a00848.html">浏览该文件的文档.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160; </div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="a03629.html">precomp.h</a>&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#pragma hdrstop</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="a00899.html#a83af80384f073f6ef143f66548a6ab6d">   25</a></span>&#160;HWINSTA <a class="code" href="a00848.html#a3a4041050de205eb5a513d4ccad9a0c3">xxxConnectService</a>(</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    PUNICODE_STRING pstrWinSta,</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    HDESK *phdesk)</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;{</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    NTSTATUS Status;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    LUID luidSystem = SYSTEM_LUID;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    HANDLE hToken;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    ULONG ulLength;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    PTOKEN_USER ptuService;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    PSECURITY_DESCRIPTOR psdService;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    PSID psid;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    PACCESS_ALLOWED_ACE paceService = NULL, pace;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    OBJECT_ATTRIBUTES ObjService;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <a class="code" href="a02905.html">PPROCESSINFO</a> ppiCurrent;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    HWINSTA hwinsta;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    UNICODE_STRING strDesktop;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">     * Open the token of the service.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    Status = <a class="code" href="a00680.html#a80a4bdd9ccbc04bf79c9c3e18860adfd">OpenEffectiveToken</a>(&amp;hToken);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keywordflow">if</span> (!NT_SUCCESS(Status))</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160; </div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">     * Get the user SID assigned to the service.</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    ptuService = NULL;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    paceService = NULL;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    psdService = NULL;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    ZwQueryInformationToken(hToken, TokenUser, NULL, 0, &amp;ulLength);</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    ptuService = (PTOKEN_USER)UserAllocPool(ulLength, TAG_SYSTEM);</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    <span class="keywordflow">if</span> (ptuService == NULL)</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        <span class="keywordflow">goto</span> sd_error;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    Status = ZwQueryInformationToken(hToken, TokenUser, ptuService,</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;            ulLength, &amp;ulLength);</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    ZwClose(hToken);</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordflow">if</span> (!NT_SUCCESS(Status))</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        <span class="keywordflow">goto</span> sd_error;</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    psid = ptuService-&gt;User.Sid;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment">     * Create ACE list.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    paceService = <a class="code" href="a00839.html#a5138b9fb6a9217820dab0fa1bc797b4d">AllocAce</a>(NULL, ACCESS_ALLOWED_ACE_TYPE, 0,</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;            WINSTA_CREATEDESKTOP | WINSTA_READATTRIBUTES |</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;                WINSTA_ACCESSGLOBALATOMS | WINSTA_EXITWINDOWS |</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                WINSTA_ACCESSCLIPBOARD | STANDARD_RIGHTS_REQUIRED,</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;            psid, &amp;ulLength);</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keywordflow">if</span> (paceService == NULL)</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        <span class="keywordflow">goto</span> sd_error;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    pace = <a class="code" href="a00839.html#a5138b9fb6a9217820dab0fa1bc797b4d">AllocAce</a>(paceService, ACCESS_ALLOWED_ACE_TYPE, OBJECT_INHERIT_ACE |</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;            INHERIT_ONLY_ACE | NO_PROPAGATE_INHERIT_ACE,</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;            DESKTOP_READOBJECTS | DESKTOP_WRITEOBJECTS | DESKTOP_ENUMERATE |</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;                DESKTOP_CREATEWINDOW | DESKTOP_CREATEMENU | DESKTOP_HOOKCONTROL |</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                STANDARD_RIGHTS_REQUIRED,</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;            psid, &amp;ulLength);</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="keywordflow">if</span> (pace == NULL)</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <span class="keywordflow">goto</span> sd_error;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    paceService = pace;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    pace = <a class="code" href="a00839.html#a5138b9fb6a9217820dab0fa1bc797b4d">AllocAce</a>(pace, ACCESS_ALLOWED_ACE_TYPE, 0,</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;            WINSTA_ENUMERATE,</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;            SeExports-&gt;SeAliasAdminsSid, &amp;ulLength);</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    <span class="keywordflow">if</span> (pace == NULL)</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        <span class="keywordflow">goto</span> sd_error;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    paceService = pace;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    pace = <a class="code" href="a00839.html#a5138b9fb6a9217820dab0fa1bc797b4d">AllocAce</a>(pace, ACCESS_ALLOWED_ACE_TYPE, OBJECT_INHERIT_ACE |</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;            INHERIT_ONLY_ACE | NO_PROPAGATE_INHERIT_ACE,</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;            DESKTOP_READOBJECTS | DESKTOP_WRITEOBJECTS | DESKTOP_ENUMERATE,</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;            SeExports-&gt;SeAliasAdminsSid, &amp;ulLength);</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordflow">if</span> (pace == NULL)</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        <span class="keywordflow">goto</span> sd_error;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    paceService = pace;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160; </div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">     * Initialize the SD</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    psdService = <a class="code" href="a00839.html#a56fbb1227212dadeed7bcf9764bcb0bf">CreateSecurityDescriptor</a>(paceService, 4, ulLength, FALSE);</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    <span class="keywordflow">if</span> (psdService == NULL) {</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        <span class="keywordflow">goto</span> sd_error;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    }</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160; </div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">     * Switch ppi values so windowstation and desktop access</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">     * checks will be against the client&#39;s handle table.</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    ppiCurrent = PpiCurrent();</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="comment">     * The windowstation does not exist and must be created.</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    InitializeObjectAttributes(&amp;ObjService, pstrWinSta,</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;            OBJ_OPENIF, NULL, psdService);</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    hwinsta = <a class="code" href="a00899.html#afc92bce28864c0c2a8b9607fa94ddb0e">xxxCreateWindowStation</a>(&amp;ObjService,</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                                     KernelMode,</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                                     MAXIMUM_ALLOWED);</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    <span class="keywordflow">if</span> (hwinsta != NULL) {</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="comment">         * We have the windowstation, now create the desktop.  The security</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="comment">         * descriptor will be inherited from the windowstation.  Save the</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment">         * winsta handle because the access struct may be moved by the</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment">         * desktop creation.</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;        RtlInitUnicodeString(&amp;strDesktop, TEXT(<span class="stringliteral">&quot;Default&quot;</span>));</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        InitializeObjectAttributes(&amp;ObjService, &amp;strDesktop,</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;                OBJ_OPENIF | OBJ_CASE_INSENSITIVE, hwinsta, NULL);</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        *phdesk = <a class="code" href="a00656.html#a404edd4f896be50fa61534fffdebcdf9">xxxCreateDesktop</a>(&amp;ObjService, KernelMode,</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                NULL, NULL, 0, MAXIMUM_ALLOWED);</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        <span class="keywordflow">if</span> (*phdesk == NULL) {</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160; </div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment">             * The creation failed, wake the desktop thread, close the</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment">             * windowstation and leave.</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;            ZwClose(hwinsta);</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;            hwinsta = NULL;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        }</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        *phdesk = NULL;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160; </div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;sd_error:</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    <span class="keywordflow">if</span> (ptuService != NULL)</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        UserFreePool(ptuService);</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    <span class="keywordflow">if</span> (paceService != NULL)</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        UserFreePool(paceService);</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    <span class="keywordflow">if</span> (psdService != NULL)</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        UserFreePool(psdService);</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160; </div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="keywordflow">return</span> hwinsta;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;}</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160; </div>
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<div class="ttc" id="aa00839_html_a5138b9fb6a9217820dab0fa1bc797b4d"><div class="ttname"><a href="a00839.html#a5138b9fb6a9217820dab0fa1bc797b4d">AllocAce</a></div><div class="ttdeci">PACCESS_ALLOWED_ACE AllocAce(PACCESS_ALLOWED_ACE pace, BYTE bType, BYTE bFlags, ACCESS_MASK am, PSID psid, LPDWORD lpdwLength)</div><div class="ttdef"><b>Definition:</b> <a href="a00839_source.html#l00071">security.c:71</a></div></div>
<div class="ttc" id="aa03629_html"><div class="ttname"><a href="a03629.html">precomp.h</a></div></div>
<div class="ttc" id="aa00656_html_a404edd4f896be50fa61534fffdebcdf9"><div class="ttname"><a href="a00656.html#a404edd4f896be50fa61534fffdebcdf9">xxxCreateDesktop</a></div><div class="ttdeci">HDESK xxxCreateDesktop(POBJECT_ATTRIBUTES ObjectAttributes, KPROCESSOR_MODE ProbeMode, PUNICODE_STRING pstrDevice, LPDEVMODE lpdevmode, DWORD dwFlags, DWORD dwDesiredAccess)</div><div class="ttdef"><b>Definition:</b> <a href="a00656_source.html#l01214">desktop.c:1214</a></div></div>
<div class="ttc" id="aa00839_html_a56fbb1227212dadeed7bcf9764bcb0bf"><div class="ttname"><a href="a00839.html#a56fbb1227212dadeed7bcf9764bcb0bf">CreateSecurityDescriptor</a></div><div class="ttdeci">PSECURITY_DESCRIPTOR CreateSecurityDescriptor(PACCESS_ALLOWED_ACE paceList, DWORD cAce, DWORD cbAce, BOOLEAN fDaclDefaulted)</div><div class="ttdef"><b>Definition:</b> <a href="a00839_source.html#l00125">security.c:125</a></div></div>
<div class="ttc" id="aa02905_html"><div class="ttname"><a href="a02905.html">tagPROCESSINFO</a></div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l02386">userk.h:2386</a></div></div>
<div class="ttc" id="aa00848_html_a3a4041050de205eb5a513d4ccad9a0c3"><div class="ttname"><a href="a00848.html#a3a4041050de205eb5a513d4ccad9a0c3">xxxConnectService</a></div><div class="ttdeci">HWINSTA xxxConnectService(PUNICODE_STRING pstrWinSta, HDESK *phdesk)</div><div class="ttdef"><b>Definition:</b> <a href="a00848_source.html#l00025">service.c:25</a></div></div>
<div class="ttc" id="aa00680_html_a80a4bdd9ccbc04bf79c9c3e18860adfd"><div class="ttname"><a href="a00680.html#a80a4bdd9ccbc04bf79c9c3e18860adfd">OpenEffectiveToken</a></div><div class="ttdeci">NTSTATUS OpenEffectiveToken(PHANDLE phToken)</div><div class="ttdef"><b>Definition:</b> <a href="a00680_source.html#l00028">ex.c:28</a></div></div>
<div class="ttc" id="aa00899_html_afc92bce28864c0c2a8b9607fa94ddb0e"><div class="ttname"><a href="a00899.html#afc92bce28864c0c2a8b9607fa94ddb0e">xxxCreateWindowStation</a></div><div class="ttdeci">HWINSTA xxxCreateWindowStation(POBJECT_ATTRIBUTES ObjA, KPROCESSOR_MODE, DWORD amRequest)</div><div class="ttdef"><b>Definition:</b> <a href="a00920_source.html#l00055">winsta.c:55</a></div></div>
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